/Engine/Source/Editor/ClassViewer/Public/ClassViewerFilter.h
Checks if the given Class is a child-of ALL of the classes in a set.EFilterReturn::Passedif it is a child-of ALL the classes in the set,EFilterReturn::Failedif it is not,EFilterReturn::NoItemsif the set is empty.
virtual [EFilterReturn::Type](API\Editor\ClassViewer\EFilterReturn__Type) IfMatchesAllInChildOfClassesSet ( [TSet](API\Runtime\Core\Containers\TSet)< const [UClass](API\Runtime\CoreUObject\UObject\UClass) * > & InSet, const [UClass](API\Runtime\CoreUObject\UObject\UClass) * InClass )